Complexometric precursor formulation methodology for industrial production of fine and ultrafine powders and nanopowders for lithium metal oxides for battery applications

Abstract

A compound M j X p which is particularly suitable for use in a battery prepared by the complexometric precursor formulation methodology wherein: M j is at least one positive ion selected from the group consisting of alkali metals, alkaline earth metals and transition metals and j is an integer representing the moles of said positive ion per moles of said M j X p ; and X p , a negative anion or polyanion from Groups IIIA, IV A, VA, VIA and VIIA and may be one or more anion or polyanion and p is an integer representing the moles of said negative ion per moles of said M j X p .

The invention claimed is:  
     
       1. A method of forming a powder M j X p  wherein M j  is a positive ion selected from alkali metal, alkaline earth metal or a transition metal; X p  is a monoatomic or a polyatomic anion selected from groups IIIA, IVA, VA, VIA or VIIA comprising:
 charging a reactor vessel with a first reactant comprising said Mj; 
 forming a surface interface of said first reactant; 
 adding a second reactant comprising said Xp to said surface interface thereby inducing a surface reaction between said Mj and said Xp at said surface interface thereby forming MjXp; 
 drying said MjXp to obtain a dry powder; and 
 calcining said dried powder of said MjXp. 
 
     
     
       2. The method of forming a powder M j X p  of  claim 1  wherein said surface interface is a bubble. 
     
     
       3. The method of forming a powder M j X p  of  claim 1  wherein said surface reaction comprises a complexcelle. 
     
     
       4. The method of forming a powder M j X p  of  claim 1  wherein at least one of said first reactant or said second reactant is a solution.